Railroad-signal



(No Model.)

J. DOLAN.

RAILROAD SIGNAL.

Patented De0.19, 1882.

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UNIT D STATES PATENT OFFI E.

JAMES DOLAN, OF SUOKASUNNY, NEW JERSEY.

RAILROAD-SIGNAL.

SPECIFICATION forming part of Letters Patent No. 269,394, dated December19, 1882.

Application filed July 1, 1882. (No model.)

To all whom it may coiicern: Be it known that 1, JAMES DOLAN, a citizeof the United States, and a resident of Suckasunny, in the county ofMorris and State of New Jersey, have invented a new and valuableImprovement in Railroad-Signals; and 1 do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference being bad to the annexed drawings,making a part of this specification, and to the letters and figures ofreference marked thereon.

Figure 1 of the drawings is a vertical sectional view of myrailroad-signals. Fig. 2 is a horizontal section of the same.

This invention has relation to alarm-signals for railroad-switches; andit consists in the construction and novel arrangementof a pivotpostcarrying a segment-pinion, and a crankarm connected to a horizontalslide, a retracting spiral spring, and a slide-rack having a wireconnection with the operating-lever of a switch, said parts serving,when the switch is set for the siding, to move an alarm-triggerattachedto a locomotive, and when the switch is set for the main line toretractthe horizontal slide which engages said alarm-trigger, all ashereinafter set forth.

1n the accompanying drawings, the letter A designates a case designed toprotect the working devices within it from the effects of the weather.

B represents an upright post, the lower end of which is pivoted at O. Abearing, 1), is provided near the upper end of the post to hold it inproper position.

E represents a pinion, which is secured to,

the post 13, said pinion being provided with teeth on half of itsperiphery, as indicated in the drawings at F. The upper end of the postis provided with a horizontal or crank arm, Gr, the end of which ispivoted to one end of a connecting-rod, H, the other end of which ispivoted to a horizontal slide, K, which is designed, when the post orstem B is turned half around, to be projected a certain distance througha bearing, L, in the side wall of the case.

N represents a horizontal rack slide arranged in bearings P in the case,so as to enga'ge the pinion E. The teeth a of this rack are sunken orformed in alongitudinal recess,

the edges of which are raised a little above slide-rack N to move ineither direction to adjust itself. The slide-rack N is operated by awire, W, extending to a switch, and connected to the switch-lever orother moving part thereof. When the switch is set for the siding theslide-rack N will be moved in its hearings to turn the post or stem Band project the signal-slide K. When the switch is set for the main linethe tension on the rackslide will be relieved, and the post will beturned back to its normal position by means of a reacting spiral spring,S, the ends of which are respectively attached to the post and thecase-wall. The case is designed to be secured near the track in suchposition that the signal-slide K, when'projected', will extend towardthe track sufficiently to engage a pivoted trigger, T, the end 61 ofwhich hangs downward. This trigger is pivoted to an arm, V, which isadjustable up and down in bearings of an arm or bar, I, which isfastened to any suitable portion of-the frame of a locomotive.

To the upper end, e, of the pivoted trigger T is attached one end of awire, 2, the other end of which is connected to the striking mechanismof a gong in the engineers cab. When the lower end of the trigger Tstrikes the slide K alongside the track the trigger will be de flected,sounding the gong.

This signal-operating device can be placed as far as necessary from theswitch, and, if desirable, several of them can be arranged one hundredor more feet apart, all being counected and operated at the same time.

Having described this invention, what I claim, and desire to secure byLetters Patent, 1s-- l. The signal-operating device consisting of thecase A, pivoted post B, having the arm G, and pinion E, the signal-slideK, and connecting'rod H, the slide-rack 'N, and replacingspring S, andthe wire W, connecting the sliderack to a lever or moving part of theswitch mechanism, substantially as specified.

2. A signal-operating device having a piv- 5 oted post operated bysegment-pinion rackslide, and spring, and having an arm, G, connected toa signal-slide, K, adapted to be pro jected when the switch is open, toengage the trigger of an alarm device attached to the 10- 1'0 comotive,substantially as specified.

1in testimony that I claim the above I have JAMES DOLAN.

Witnesses:

WILLIAM H. YOUNGS, VICTOR E. BoELL.

